Startup container with hostname etcdsandbox1

docker run --name etcdsandbox1 -h etcdsandbox1 -it r3kdotio/etcdsandbox bash

Start etcd in running container

etcd 2017-08-03 18:58:11.115303 I | etcdmain: etcd Version: 3.1.0 2017-08-03 18:58:11.115490 I | etcdmain: Git SHA: Not provided (use ./build instead of go build) 2017-08-03 18:58:11.115533 I | etcdmain: Go Version: go1.7.4 2017-08-03 18:58:11.115553 I | etcdmain: Go OS/Arch: linux/amd64 2017-08-03 18:58:11.115582 I | etcdmain: setting maximum number of CPUs to 4, total number of available CPUs is 4 2017-08-03 18:58:11.115628 W | etcdmain: no data-dir provided, using default data-dir ./default.etcd 2017-08-03 18:58:11.115797 I | etcdmain: advertising using detected default host "172.17.0.2" 2017-08-03 18:58:11.116713 I | embed: listening for peers on http://localhost:2380 2017-08-03 18:58:11.117019 I | embed: listening for client requests on localhost:2379 2017-08-03 18:58:11.171924 I | etcdserver: name = default 2017-08-03 18:58:11.171972 I | etcdserver: data dir = default.etcd 2017-08-03 18:58:11.171992 I | etcdserver: member dir = default.etcd/member 2017-08-03 18:58:11.172012 I | etcdserver: heartbeat = 100ms 2017-08-03 18:58:11.172028 I | etcdserver: election = 1000ms 2017-08-03 18:58:11.172051 I | etcdserver: snapshot count = 10000 2017-08-03 18:58:11.172077 I | etcdserver: advertise client URLs = http://localhost:2379 2017-08-03 18:58:11.172094 I | etcdserver: initial advertise peer URLs = http://172.17.0.2:2380 2017-08-03 18:58:11.172128 I | etcdserver: initial cluster = default=http://172.17.0.2:2380 2017-08-03 18:58:11.361635 I | etcdserver: starting member 69015be41c714f32 in cluster 10e5e39849dab251 2017-08-03 18:58:11.361738 I | raft: 69015be41c714f32 became follower at term 0 2017-08-03 18:58:11.361794 I | raft: newRaft 69015be41c714f32 [peers: [], term: 0, commit: 0, applied: 0, lastindex: 0, lastterm: 0] 2017-08-03 18:58:11.361824 I | raft: 69015be41c714f32 became follower at term 1 2017-08-03 18:58:11.532231 I | etcdserver: starting server... [version: 3.1.0, cluster version: to_be_decided] 2017-08-03 18:58:11.533830 I | etcdserver/membership: added member 69015be41c714f32 [http://172.17.0.2:2380] to cluster 10e5e39849dab251 2017-08-03 18:58:12.262639 I | raft: 69015be41c714f32 is starting a new election at term 1 2017-08-03 18:58:12.262736 I | raft: 69015be41c714f32 became candidate at term 2 2017-08-03 18:58:12.262822 I | raft: 69015be41c714f32 received MsgVoteResp from 69015be41c714f32 at term 2 2017-08-03 18:58:12.262888 I | raft: 69015be41c714f32 became leader at term 2 2017-08-03 18:58:12.262939 I | raft: raft.node: 69015be41c714f32 elected leader 69015be41c714f32 at term 2 2017-08-03 18:58:12.263542 I | etcdserver: setting up the initial cluster version to 3.1 2017-08-03 18:58:12.282826 N | etcdserver/membership: set the initial cluster version to 3.1 2017-08-03 18:58:12.282967 I | etcdserver: published {Name:default ClientURLs:[http://localhost:2379]} to cluster 10e5e39849dab251 2017-08-03 18:58:12.283079 I | etcdserver/api: enabled capabilities for version 3.1 2017-08-03 18:58:12.283146 I | embed: ready to serve client requests 2017-08-03 18:58:12.284042 N | embed: serving insecure client requests on 127.0.0.1:2379, this is strongly discouraged!

Check etcdsandbox1 in another term

docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES etcdsandbox1 etcdsandbox "bash" 3 minutes ago Up 3 minutes etcdsandbox

Attach to running container in another term

docker exec -ti etcdsandbox1 bash

Check what etcd contains

root@etcdsandbox1:/# etcdctl ls

look for a key that does not exist

root@etcdsandbox1:/# etcdctl get /doesnotexist Error: 100: Key not found (/doesnotexist) [12]

set a key

root@etcdsandbox1:/# etcdctl set /mykey1 MyValue1 MyValue1

set a key

root@etcdsandbox1:/# etcdctl get /mykey1 MyValue1

find the keys

root@etcdsandbox1:/# etcdctl ls /message

make a directory

root@etcdsandbox1:/# etcdctl mkdir /mydir

find the keys

root@etcdsandbox1:/# etcdctl ls /mydir /mykey1

set a key in a directory

root@etcdsandbox1:/# etcdctl set /mydir/mykey2 MyValue2 MyValue2

find the keys

root@etcdsandbox1:/# etcdctl ls /mydir /mykey1

find the keys recursive

root@etcdsandbox1:/# etcdctl ls -r /mydir /mydir/mykey2 /mykey1

get the key in a directory

root@etcdsandbox1:/# etcdctl get /mydir/mykey2 MyValue2

set a key in a directory with a time to live of 30 seconds

root@etcdsandbox1:/# etcdctl set /mydir/mykey3 MyValue3 --ttl 30 MyValue3

find the keys recursive

root@etcdsandbox1:/# etcdctl ls -r /mydir /mydir/mykey2 /mydir/mykey3 /mykey1

watch for changes before the 30 seconds is up

root@etcdsandbox1:/# etcdctl watch / -r [expire] /mydir/mykey3

delete a key

root@etcdsandbox1:/# etcdctl rm /mykey1 PrevNode.Value: MyValue1

delete a directory

root@etcdsandbox1:/# etcdctl rm -r /mydir

find all keys

root@etcdsandbox1:/# etcdctl ls root@etcdsandbox1:/#

debug what a set does over http (curl)

root@etcdsandbox1:/# etcdctl --debug set /mydir/mykey3 MyValue3 --ttl 30 start to sync cluster using endpoints(http://127.0.0.1:4001,http://127.0.0.1:2379) cURL Command: curl -X GET http://127.0.0.1:4001/v2/members cURL Command: curl -X GET http://127.0.0.1:2379/v2/members got endpoints(http://localhost:2379) after sync Cluster-Endpoints: http://localhost:2379 cURL Command: curl -X PUT http://localhost:2379/v2/keys/mydir/mykey3 -d "ttl=30&value=MyValue3" MyValue3

debug what a set does over http (curl)

root@etcdsandbox1:/# etcdctl --debug get /mydir/mykey3 MyValue3 start to sync cluster using endpoints(http://127.0.0.1:4001,http://127.0.0.1:2379) cURL Command: curl -X GET http://127.0.0.1:4001/v2/members cURL Command: curl -X GET http://127.0.0.1:2379/v2/members got endpoints(http://localhost:2379) after sync Cluster-Endpoints: http://localhost:2379 cURL Command: curl -X GET http://localhost:2379/v2/keys/mydir/mykey3?quorum=false&recursive=false&sorted=false Error: 100: Key not found (/mydir/mykey3) [21]

Setting up key authentication

https://coreos.com/os/docs/latest/generate-self-signed-certificates.html